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...
#define USB_CFG_IOPORTNAME      B
/* This is the port where the USB bus is
 * "B", the registers PORTB, PINB and DD
 */
#define USB_CFG_DMINUS_BIT      1
/* This is the bit number in USB_CFG_IOP
 * This may be any bit in the port.
 */
#define USB_CFG_DPLUS_BIT       2
...
#define USB_CFG_INTR_POLL_INTERVAL      200
/* If you compile a version with endpoint 1 (interrupt-in), this is the poll
 * interval. The value is in milliseconds and must not be less than 10 ms for
 * low speed devices.
 */
#define USB_CFG_IS_SELF_POWERED         1
/* Define this to 1 if the device has its own power supply. Set it to 0 if the
 * device is powered from the USB bus.
 */
#define USB_CFG_MAX_BUS_POWER           100
...
#define USB_CFG_DEVICE_CLASS        0    /* set to 0 if deferred to interface */
#define USB_CFG_DEVICE_SUBCLASS     0
/* See USB specification if you want to conform to an existing device class.
 * Class 0xff is "vendor specific".
 */
#define USB_CFG_INTERFACE_CLASS     3   /* define class here if not at device level */
//#define USB_CFG_INTERFACE_CLASS     0   /* define class here if not at device level */
#define USB_CFG_INTERFACE_SUBCLASS  0
...
/* ----------------------- Optional MCU Description ------------------------ */

/* The following configurations have working defaults in usbdrv.h. You
 * usually don't need to set them explicitly. Only if you want to run
 * the driver on a device which is not yet supported or with a compiler
 * which is not fully supported (such as IAR C) or if you use a differnt
 * interrupt than INT0, you may have to define some of these.
 */
/* #define USB_INTR_CFG            MCUCR */
/* #define USB_INTR_CFG_SET        ((1 << ISC00) | (1 << ISC01)) */
/* #define USB_INTR_CFG_CLR        0 */
/* #define USB_INTR_ENABLE         GIMSK */
#define USB_INTR_ENABLE_BIT     INT2
/* #define USB_INTR_PENDING        GIFR */
#define USB_INTR_PENDING_BIT    INTF2
#define USB_INTR_VECTOR         SIG_INTERRUPT2

#endif /* __usbconfig_h_included__ */

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#define USB_POLL_TCNT_START 25000 // Works only for notebooks

...

  // USB Poll with Timer1 (16Bit)
  TCCR1A = 0x00;
  TCCR1B = (1 << CS10); // prescale = 0
  TCNT1 = USB_POLL_TCNT_START;
  TIMSK |= (1 << TOIE1);

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Apr 8 09:51:33 druebox kernel: [91646.996056] usb 5-2: new low speed USB device using uhci_hcd and address 4
Apr 8 09:51:33 druebox kernel: [91647.210199] usb 5-2: configuration #1 chosen from 1 choice
Apr 8 09:51:33 druebox kernel: [91647.265686] generic-usb 0003:16C0:05DF.0003: hiddev96,hidraw1: USB HID v1.01 Device [klaute LEDMatrix] on usb-0000:00:1d.3-2/input0
Apr 8 09:51:44 druebox kernel: [91657.616075] usb 5-2: reset low speed USB device using uhci_hcd and address 4
Apr 8 09:52:11 druebox kernel: [91684.780095] usb 5-2: USB disconnect, address 4